Paper-folding



(No Model.)

A. P. WARNER.

PAPER FOLDING. No. 451,539". Patented May 5,1891.

Mechanism.

QXWcme/weo 81 1 0044 01/ 4 M V agfi 6141011401 UNITED STATES PATENT FFICE.

AUSTIN P. VARNER, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE DUPLEX PRINTING PRESS COMPANY, OF BATTLE CREEK. MICHIGAN.

PAPER-=FOL'DING.

SPECIFICATION forming part Of Letters Patent No. 451,539, dated May 5, 1891.

Application filed August 17, 1889. Renewed October 16, 1890. Serial No. 368,280. (No model.)

To all whom it may concern.-

Be it known that I, AUSTIN P. \VARNER, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Paper-Folding; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form part of this specification, in which- Figure 1 is a detail view indicating the rel ative positions of a printing-press, a folding machine, delivery-rolls, and creasing devices, whereby my invention can be accomplished. Fig. 2 is a detail plan view of Fig. 1. Fig. 3 is a transverse sectional view showing a transverse line of paper after creasing. Figs. 4, 5, and G are details illustrating various forms of creasing devices which might be employed.

This invention is an improvement in operative printing and folding mechanism; and its object is to insure the perfect accuracy of fold of sheets of paper fed from a printingpress or other mechanism into a folding-machine, and this I accomplish by means of the combination of suitable mechanism,by which I crease or indent the web or sheet of paper'before it enters the folding-machine in the exact line upon which it is to be folded, so that accurate folding thereof in the folding-ma chine is insured, since the paper will naturally bend at the weakest point, which is where it has'been pinched or creased, all of which I accomplish as hereinafter clearly set forth and claimed.

Referring to the drawings, A represents the delivery end of a printing-press of any suitable construction, either web or sheet press, and B B designate delivery-rolls by which the sheet or web is directed toward the foldingmachine 0, which is of any well-known and suitable construction, having a tucker-blade D arranged to operate laterally on the sheets and tuck them between the folding rolls or blades, as usual.

F designates a roll interposed beneath the web or sheet of paper between delivery-rolls BB and the folder, and feed-rollers, and tapes (not shown) may be employed to direct the sheet or web to and from roll F. here a web of paper is used a proper knife V, of suitable construction, is arranged to sever the Web into sheets before it (the paper) enters the folder. The roll F may be adjustable, and has a central peripheral V-shaped groove f, and, if desired, may have several such grooves.

G designates a shaft mounted in proper bearings (not shown) above roll F, and upon this shaft is mounted one or more disks g,

which have beveled peripheries corresponding to the grooves in shaft or roll F, and are set on shaft G, so as to coincide with the grooves of said roll F. As shown, but one crease is to be formed in the web or sheet of paper N in the central line thereof, as indicated by w, and this is accomplished by depressing or lowering shaft G or raising roll F in any suitable manner, by mechanism that would be readily provided by a mechanic, until the edge of disk 9 enters the groove f of the roll F, when the paper passing over said roll will be creased or indented by said disk coacting with the grooved roll, as is obvious. Said crease will be continuous and in the exact center line of the sheet or web of paper as it passes "from the press if the carrying tapes or rolls have been properly adjusted. After passing the creasing devices the sheet of paper thus creased enters the folder and the tucker-blade is operated and descends, directing the sheet between the folding rolls or racks, as usual, and even though the sheet may have been displaced when pass- 8 5 ing beneath the tucker-blade, yet it will be folded evenly and truly on the line of creasing made as described. In other words, the operation is this: Then the mechanism is in motion the sheet or web of paper carried by tapes (not shown) passes under the disk after being printed and receives a crease or linear indentation along the line on which the fold is desired. As this crease is made before the paper is an opportunity to get out of the true line of work, it can be i. e., the crease can belocated and formed precisely where the fold is desired, and in the exact direction. Should the sheet then upon being detached and en- IOO tering the folder be somewhat diverted from its true course or position, the tucker or freed from the carrier-tape or has 5 Y striker blade will draw it into position and tuck the sheet along the line of indentation.

In place of grooved roll F, grooved disks might be employed, as in Fig. 5, or a beveled edged blade operating in connection with a grooved roller or blade, as in Fig. 6.

Obviously various modifications in the mechanical devices for creasing the paper might be employed without departing from the essential spirit of the invention. I prefer revolving disks or rolls, because they can be set to revolve at a speed equal to the movement of the paper, and thus assist in delivering it to the folder.

I am aware that paper sheets have been creased by various machines for various purposes, such as envelopes, boxes, bags, and for pharmaceutical purposes. Therefore I do not claim creasing the paper broadly, but only creasing of the web or sheets between the press and folder eration.

Having thus described my invention, what as part of a continuous op- I claim, and desire to secure by Letters Patent, is-

The combination, with the delivery-rolls of a web-printing press of suitable construction, and a folding-machine of ordinary construc tion arranged to first fold the sheets longitudinally, an d delivery-tapes for directingthe web from the press to the folder, of a suitable mechanism for severing the web into sheets before it reaches the folder, and mechanism, substantially as described, arranged between the press and cutting mechanism for indenting or creasing the web longitudinally on the first folding-line thereof, substantially as and for the purpose described.

In testimony that- I claim the foregoing as my own I affix mysignature in presence of two witnesses.

AUSTIN I. WARNER. \Vitnesses:

M. R. CULLEN, HUGH CASEY. 

